地质雷达在加筋土路基病害检测中的应用

Application of Ground Penetrating Radar in Disease Detection of Reinforced Soil Subgrade

加筋土在路基工程中有着广泛的应用。讨论了加筋土路基的破坏形式及受其影响产生的路基病害,并研究使用地质雷达法检测加筋土路基的病害。通过检测工作表明,应用地质雷达对加筋土路基病害进行检测有较好的效果,拉筋或支挡结构破坏后,引起的路基土层沉陷、松散等病害,在雷达数据剖面中均有明显的表现特征。根据雷达反射波形态、幅值等特征能够分析判断路基病害的成因,土层内拉筋的工作状态,为道路设施的维护管理和安全运营提供数据支持。

Reinforced soil is widely used in subgrade engineering.This paper discusses the damage forms of reinforced soil subgrade and the subgrade diseases caused by them,and studies the use of ground penetrating radar to detect the diseases of reinforced soil subgrade.The test results show that the application of ground penetrating radar to the disease detection of reinforced soil subgrade has a good effect.After the damage of tie bar or retaining structure,the subgrade soil layer subsidence,looseness and other diseases have obvious characteristics in the radar data profile.According to the characteristics of radar reflection wave shape,amplitude and other characteristics,it can analyze and judge the causes of subgrade diseases,and the working status of reinforcement bars in the soil layer,providing data support for the maintenance management and safe operation of road facilities.